Write a function is_balanced(s) that uses a stack to check if parentheses are balanced

A medium Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

medium

Problem

Write a function is_balanced(s) that uses a stack to check if parentheses are balanced. Test it with '(())', '(()', and '()()' and print each result (True/False).

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